Fluid-transmission device



Dec. 9 1924- 1,518,797

w. E. KAY

FLUID TRANSMISSION DEVICE Filed May 27, 1920 8 Sheets-Sheet 1WI'TNESSES' NI/E/VTOR wuuam I A TTOR/VEVS Dec. 9, 1924- 1,518,797

w. E. KAY

FLUID TRANSMISSION DEVICE Filed May 27,1920 8 Sheets-Sheet 2 IN VE/V TORWilliam E. 1094 ATTORNEYS Dec. 9, 1924- 1,518,797 r v w. E. KAY

FLUID TRANSMISSION DEVICE' Filed May 27, 1920 s Sheets-Sheet s WITNESSESI V INVENTOR WzZZzamL/Fcg;

A TTORNEYS W. E. KAY

FLUID TRANSMISSLON DEVICE Filed May 27, 1920 8 Sheets-Sheet 4 WITNESSES0 //w/vr0/; 1 74, W WLZZLarnE. Kay;

ATTORNEYS Dec. 9, 1924. 1,518,797

W. E. KAY

FLUID TRANSMISSION DEVICE Filed May 27, 1920 8 Sheets-Sheet 5 WITNESSESI f", I

,4 TTORNEYS Dec. 9, 1 4- 1,518,797

- W. 'E. KAY

FLUID TRANSMISSION DEVICE Filed May 27, 1920 8 Sheets-Sheet 6 g *8 YWITNESSES ll I E INVE/VTUR j" d S v I W y if )4 a f A TTOR/VEYS Dec. 9,1924. 1,518,797

W. E. KAY

FLUID TRANSMISSION DEVICE Filed May 2'7, 1920 8 Sheets-Sheet 7 WITNESSESmy IVTOR A TTORNEYS FLUID 'I'RANSMI SS ION DEVICE Filed May 27, 1920 8Sheets-Shget 8 mm 88E8 Will E IIVVENTOR "Jaw/Y6.

A TTORNEYS '0 all who mi 'I Tl/(LLI/ concern:

Be it :known that I, WILLIAM .EDWARDF a. citizen of the UnitedStates,and a.

Patented Dec. 9, 1924.

wrm miunnwaan KAY, or anvruaforrroj FL UID-TRANSMISSION DEVICE.

a 1 Application flied my 27, 1e2o.: Seria1:No.-384',665. N

KAY, resident of Elyri'a, in the county-of Lorain and State .o'f.Ohio,have invented certainnew and useful Improvements in Fluid-.1

Transmission Devices, ofwhich the :followin 413 a specification.

i .v P automobiles vand motor vice connection between thecr'ank shaftand; wtherea'r wheels in lieu of the usual trans- Imission-gears,universally' joined to the propellershaftand-difi'erential of ,tlie rear-a de, J iny object being theprovision of a practical vefiicient arrangement capableofefiectiveefibdent/operation and readily controllable as todirection of movement andspeed. Alfurther object is theprovision of an ar rangement whichincludes a forward pumping and' controlling unit and arear tributing andpower unit, connected by flexiblev conduits, and including oertam-improved mechanisms both in. the pumping and power units whereby auniform torgue f of movement is insured at all times an constant steadyuniform application of powerbrought about, at all speeds both forwardand reverse. 7 A still further a mechanism in which the parts-are so arranged, constructed and related as to bring about ready accessibilityand permit al necessary adjustments and repairs to be readily and easilyeifected.

A still further object is the provision of a mechanism of -thischaracter in which, provision is made for an automatic com-.

pounding of power both in reverse and in initial forward speed, themeans .forthis purpose also acting in the other forward speeds to bringabout uniform constant flow of the circulating-fluid.

With the-above ob ects and certain others which may be better understoodand more thoroughly appreciated from the following description, my.invention resides in the construction, arrangement and operation of theparts in relation to one another in their details as shown in theaccompanying drawi'esent invention relates generally to cars and,morepar-; ticularly to 'a fluid power transmissionzedej dis- 7 object isthe provisionof' through the distributor box taken ,tion and wherein,;;p

Figure 1is a topplanwiew showing my invention, v v o -Figure2 .-is.ahorizontal sectionthereg '1. I.-

Figure 3 is aside elevatiomy, -Figure 4 is .a vertical transversesection :taken on line 4 4 of Figure,2, Figure 1;) is a verticaltransverse section taken On line 5-5 of Figure Z withthe-slide e ved, gure 5 is anotheiztransversevertical .sect o ta n 19 l ne 0i F r Z i i gue tisaii a l-pen, .efite'rievo the controlling slide v remove 9 Figures8 and 9 are, detail ve ical transverse sections takenthroughthecontrollin slide respectively onlines and 9 9 0 Figure 7, i 3 vFigure 10 is a detail vertical section through one of the bearing rails,taken on line 10-10 of Figure' ii,

Figure 11 is a detail sideview of the skeletons-rotor, -s Figure 12'is adetail perspective view of oneof the radialyanes, v

Figure '13 is a, vertical transversersection through the distributingand power units taken on line 13 13 of Fi rev2,

b Figure 14 is a side view 0 the distributor Figure 15:is a verticalsection through the distributor box on line 15-115 of Figure 14, Figures16 and 17 are vertical sections eclines 16-16 and 17-17 of igtively onure' '14,

Figure 18 is a vertical section throu h one ;of the motors taken on line1818 o Figure 13, 1 p

Figures 19 and 20 are detail transverse sections through portions of.one of' the power shafts and the respective axle taken hrespectively onlines 19.19 and. 20,.20 of Figure 13,

,- igures 21 and 22 are; sectional' views .through motors of modifiedform, and

. ..Figures 23, 24, 25,andQdareside-views,

tp1a.rt1 in section, showing rotors with modied orms of vanes:

Referring now to these figures the forwardunit includes a pump casing 30disosed with its axis arallel to the side frame bars 31 of the vehiclechassis and with its rear late 32 bolted against the front wall 33 thecontrol box by bolts 34. This r rii sinamba e g atb a 'es rearwall andhas a' detachableho t bearing 36 provided with an axial bearing thebearings 35 andrB weoPa fl ea;- the support of the rear end of a motorcrank shaft 38 around which the front'plate; 36;;has a stuffing box 39.

The control box is iiicommunicationfiyith sl the pump. casingaspresently described and *tas-anetaehableaear platero which isp'rovided among other things' -with" upper and 6 and incommunicationwith theseopemngs is distributed laterally to th 660' casings 48 and 49from which it passes through the distributer box to the other conduitand back from the latter through the control box to the pump casing andwith this general statement in mind the details of construction 35 aismit s 'va on r t r e-' e" QQW' proceeded ed' -front -wit-h may: bebetterunllerstood" and more pump which*'-"is securedupon the motor crankshaft 38; The rotor travels with -forconduits 43 and 44 -are rigidlyconiie'cted tW 'W'ard and rear wear= lates 72-and 73 and-its chamber hasupper and lower concentric Bst"seeiria3rgupe-ethe conduits 43 wallsections 74 and 75 which concentricv and 44 inclin downwardly and1earwar'dly ='setions "mergednto eccentric sections-76 at f iri'siibstalitiaflly fiarallelyelation to "thereer their opposite sidesgraduallycurving into swam-are connected taupp'er and ldwer throtoij"ngagin surfac s t of the abutments openings 45 and 46 of adlstributef'box 47 of thewbs'69 11116170 5 '11 o e 4 the-rotor 71- hasramotor casings 48 andf49 piojecting latera lly'dial kihannelsZ7111'WhlCh aIGdiSPOSQ/d radistri utor. box iaind whiclfhave'*'axia;lly{blocks f8frwhose inner ends'are.engagedwby aliiie'd' innera'lid oiiter bearings so-iaad 51- 79 dispo'sed against the bases of theP channels 77"and -whose'outer ends'have cydetachably bolted side plate53 supporting 'ner eylindrical ;ribs 8l"of the cylinder en- "theouter'bearingbl and provided with afigagingwipers82which are thusmounted to central -stufiiri""g" box 54at the-endbF-it's re ocloo'roscillate with respect'to the blocks 79 spective shaft 52 -where 'the'latter f has a At the upper-"portions of-its opposite squared axialbore55' -as seeri in 'Fi'g'iire 19= sides;- p'ump casing 30 has a pair ofupright for the reception of the square'd'inner' end =.'-cylinders83-whose lower ends are in open 56 of l -"a'X1e5575' E'aidh Wheelcommunication with'the upper fluid channels axle is journaled throilghthe tubular outer 64 and'66 and-whose upper ends are closed Inn 'extension "58 of a-taperin'ghousin'g59 which by screwcaps' 84. Thesescrew caps which surrounds the're's'pect1ve"stuifing box '54 in -closethe u per ends of the cylinders-form spaced relatio'ri' and isboltedatits inner 'enabutments or the upper ends of springs 85 larged endto'therespective side plate 53 and whose lower ends en age cup shaped pistonswhich has an annularly shouldered portion -86 yieldab'le :vertical yunder tension of the 60 forming stationary abutment 'for a s rings-85and having lower piston leathers -thru'st,bearing "61 which is] engagedby a 8 to render the "pistons fiuid tight'and split collar62secured'around" and in en-' against the pressure of fluidbearingmpgagement withtheinnerportionof the rewardly thereupon.

spective axle 57- beyond the're'spective' st'uif The several channels64, 65,66 and 67 coming box 54. Fo the purpose of associating--municateat-their rea'r'ends through alined and'disassoc'iating theseparts, each of the openings' certain of which are seen at 88 housings-59 has hand openings normally-- in Fig"ure' 2, in the front wall 33 ofthe conclosec'. oy covers 63 so that by detachment of ""trolbox, withupper and lower spaces 89 and vthesplit collar 62'which is seen'indetailin 90 of the' control box. respectively above and Figure 20, the'res'pective wheel axle tflj'may below-the control slide 91 andrespectively be entirely-withdrawn, renderl'ng' repairs to incommunication with. the openings 41- and simple operation.

or substitution of these parts *a-pa'rticu larly-42 oftherearplate 40 ofthe control box as t "clearly seen inFigure 5'. Within this con-Ingeneral the tra-nsifiission-fluid is pl'lm ed-=--trolbox-,'the-controlslide ,9l is'len hwise from the casin '30throu h the control oxmovablein a'direction transverse tot e-axis to one of the" ex'ible' 'conuits and' passes to -of the pump-c'asin '30; upon internal ribs 92the'dis'tributdr'box4i'byfifmeansof which it-' -'at opposite ends o thespaces 89 and 90, and

Sbetweenanti-friction bearings 93,- the slide 91'-being'mo"ably:pivotedatone end to the lower end ofa .zcrankiarm 94 whose upper---end-'is'securedto the rear end of anoscillating control shaft 95;This shaft= projects forwardly ofthe; control boxthrough a stuifing box96 as seenin Figure 2 in the front "wa1l'33 of-the control'boxiat oneside-of the pump casing 30 and the'shaft has abevel gear 97 inconnection with abevel gear 98 upon-the inner end of alaterallyprojecting -lever actuated shaft 99 from the outernend :ofwhicha controllever-lOO upstands. .This

. Llever mayhave a-suitable .latch mechanism .in Figure. 3a

101' engageablewith a' notched quadrant 102 1 :'ecured:upon one of theside bars31 as seen Referring to Figure'T, the control slide 91 sis inthe nature of an elongatedirectangular .box havinga -'rear.' wall103,:top and bottom walls104 and 105 and open at-its front.

:top' and bottom walls and formlng a central :chamberz 108 'incommunication. withyan :-.-.-'opening 109 in the top .W8l-lw104 andwithin P i which: compartment .:108 is. an; angular 'web. :5 I 110connected I to. the zvertical fweb 107-v and .-=to the top wall 104- tovform -a.channel11111.r rear endsofthe:conduits-includingthmmoio'pening-112 through the rear wall. 104as? seen in Figures-Tend 8.-

- Laterallyspaced beyond the vertical webs 106 and 107 :are verticalfwebs- 113 and 114 communication at its rear i end i with 1 an;

formingibetween' the Isame "andthe first namedriwebs vertical channels115 and116 tom walls-andaround-which the-top, bot-.

which are unbroken from the topto thebottom andrear walls'are closed.Laterallyspaced :beyond the walls 113'and 114 .are i vertical webs 117and 118 which form be-.

tween them .and the said webs or. walls 113 and 114 azpai'r of vertical.channels 119. and

' 120 closed attheir top, bottom and rearsides like the channels 115and'116.-v The space betweenxthe web or wall-118 and the IBSPGC? tiveend 121 ofthe control box is divided;-

by a-horizontal web 122 to form upper and 'lower separated channels 123and 124, the

former: of which-communicates with Van opening 125 in the top wall 104and the latter of which communicates with an opening 126 in the rearwall 103. Likewise the space beyond the wall 117 is divided by ahorizontal web 127 to form upper and lowerchan'nels'1'28and 129 betweenthe wall 117 and the wall 130 laterally spaced therefrom,

" the upper channel 128' communicating with an opening-131m thextopwall.104 and'the lower channel-129 communicating with an opening 132inthe'lower wall 105. Thew-wall 130-is spaced-from the respective end.

.\ 133 of thecontrolzslide and this space is divided by a horizontal web134, forming upper and lower channels 135and 136, the

former,- of which communicates: withjan opening 137. in the top wall 104and the latter. ofwhich communicates withan opening -138,in.the lowerwall.105, 5

These several spaces between the. vertical webs .or ,walls arein:widthdequal to the widths of the openings88 of the front. plate 33 ofthe-control-box with the exception-of the spacebetweenithe inner pairofwebs .or walls. 1 106, and 10.7 audit is thus obvious the! channelsformed above ,-.and :below the horizontally ;.disposed -webs, willseparately communicate .with .the pump casing channels when broughtintoregistry therewith, .like

the channels 111, while-the channels v108, 1:15,;

.116, -,119V and; 120 will communicateg with both. the upper, and. lowerchannels} of :the

ing-lneans-zand themeans providing for a;-

constant. flow .as well; asqfokfi; ompounding of pressure, let 1us-Zrefer. to, Figures 13 to 18 showing :the connections between ,the

tors. As*previously stated ythe:-.1.$ .aends of.

the upper and lower conduits, 14 3. and are 1 respectively connected toopenings 45, and

46 ofztheidistributoribox 47,:these:0P'enings .45 and 46 ,being in ;partiformed by the forward oppositely-' curved 1 (uppfi and lower;

: portions 139 and 140 ofna verticalweb141 which extends through thedistributor. box

*fromits front to its rear, dividing the :same

into side'chambers' 142 and 143 which-are thus in communicationrespectively vwith the conduits .43. and ,44.-

Transversely -;of the up er= portion; of the distributor box- 47 are"orward; and;.rear fluid channels- 144 and 145-and transversely of. thelower portion thereof are channels 146 and 147. Of these pairs ofchannels, whichare-separated from one another-by vertical transversewebs 148,- the upper .forwardchannel .144 and, the lower.- .rear channel147 communicate; at their inner ends with one side of the main edividingweb 141 and thus communicate withthe-chamher 143. The upper rear channel145 and the; lower forward channel 146 communic'ate at their innerends-with the relatively; opposite side of the web and thus with,thechamber 142, and this particular arrangement and communicating.relationship .of the channels with the chambers is plainly to.be seen bya comparison. .of'-.Figure 14 with the sections of Figures .16. and 17.

Each 'of the several transverse channels of the distributor :boxv opensat its-opposite ends through 0 posite sides [of the distribu torbOXnflIld t e several channels, are so '151 and 152 of themotorcasings.- The channels of each of the 'upper and lower Y jpaii's of-'channels of the ma n-- casings are arranged ju' 'iolfopposlte sides'ofdiametrically-"opposed vertical webs 153 whose innerportions forlnahutments j154'in the rotor chambers-155, eacnict whichi'ncludes a rotor-156'disposed between wear plates-"157115 seen in Figure 13respectivelyadjacent the inner and outerbearings"50 and 51 of its shatt52 and it 'will 1 i be observed from Figure- 18 that-theseveral casingchannels openv into the rotor chamber at their outer'endsupon-relatively opposite sides ofthe verti- I cal plane ofthe axisof-therotor atthe h2-'soas to m'ove' the control slide-91 .to-the"right," looking rearwardly,-'the' yertically 'spaced channels'128 and129 are moved more or less into registry-with thepumpucasing channels64and 65 at the left of the pump 'casing while the single vertical.channel? 116 "inovesmiore or less into registry with-the channels 66and67 at the right-of the pump upper-and lower portions so that fluidpassing-'into'the chamber 143 of the distributor box 'f' 47 fromth'e'lowei- "conduit- 44' and through; the distributor bex channels 144m1dj 152fwill causeclockwise rotation of the 'rotors -1 56f which"through their shafts 52 a$ thc-ax1es 57 willturnjthe rearJve-.

' hicle vheels 158-;5in a similan direction. to

'- propel the yehiclwforwardly, the fluid passing "outwardly" throughthe 1 motor casing -channels 150 and 151*and the distributor 351 boxchannels 145-and 146 to the distributor "box"ohamber 142- and thenceforwardly.

through the flekible conduit 43.-

Each ofthe rotors 156' may have 'vanes' including springactuatedfollower blocks and oscillating wipers similar to the blocks andwipers 78 and 82 of the pump rotor 71 previously described, and each mayhave follower'blocks 159 pressed outwardly by springs 160 and having"wiping rollers 161 journaled in partially projecting relation at theirfree ends for-engagement with their chamber wall. Separate wipers may bedispensed with and the vanes formed wholly of blocks162pressedoutwardly-by-springs 163 and with outer convex wall-engaging surfaces164 as seen in Figures 21 and 24.

- Moreover 'as seen in Figures =22, 25 and 26 the rotors may haveswinging vanes- 165 either with or without cylinder engaging rollers166.and pressed outwardly by round nosed plungers 167 in turn actuatedby springs 168.

- 4 As shown particularly-in Figure 18 the last position-the fluidpasses .to the pump rotor chamber of each of the motor casings 00 48 and49 is formed, like the rotor chamber of the pump, with diametricallyopposed concentric wall sections 169- which at their ends merge intoeccentric'portions 170 curvingto the planes of the inner'surfaces of theCl abutments 154 so that with the'vanes dis posed as shown around therotors, there will be a completely balanced action at all times, eachvane taking effective pressure succesreduced or entirely relieved. 1

'sively as the pressure against other vanes-is Thus in operation theparts may assume the neutral: position shown inFigure i2 wherein'thevertical'channels 119 and 120 of the control box are in communication-with'the pump casing channels 64, 65, 66nd 67 so that fluid is taken inby the rotor 71, rotating clockwise in.-'Figure 4,, from thechannels-64and 67 and passes out through the channels and 66 rearwardlyto the control 'box 104 and vertically. through the "channels 119 and120- and thenforwardly again through the channels 64 and= 67, thus fromthe neutral position shown/in Figure upper opening 131 of the controlslide and th'e'upper compartment 89 of'the control --box. The fluid thustaken 'into the; rotor chamber 68 is f discharged into the pump casingchannel v66 andpasses .urearwardly to and vertically through the'controlslide channel 116 and then forwardly through the pump casing. channel67, from ,which it is taken into the lower portion of the rotor chamberand furthericompressed and finally discharged through the lower leftpump casing channel 65 to the control slide channel 129 from. which itpasses through the lower opening 132 of the slide a and through thecontrol box compartment 90 and then around the lower half of the pumprotor and is finally discharged. through a p iloidv chamber above the,abutments forming webs'i69 and,;7 0. v A quitesimilaraction is presentwhen, in order to reverse;t he movement ofthe vehicle, the controhlever100 is shifted forwardlylfrom-the neutral position ofEigure 2 so as toshift the. control slide 91,120 ,the

left, looking rearwardly, the ch annels gl23 ,and;124 being more or lessshifted into registry with the right hand channelsfifi and -I67 ofthepump casing while the single verticalchannel of-the control ,slidewisshifted to registerwith the upper andlower left hand channeIsG L and'65.this posi- -tion. the rotor. 71 takes in fluid. from the lowerrightlliand channel 67 from, the lower flexible conduit through thelower control box compartment 90 and through the control slide opening126 (seeFigure A9,) andphannel .124. and, the fluid thuspassesaround-the lower portion .ofthe .rotor 71 and is discharged intothe lower left handgchannel 65 from which itvpassesrearwardly tothelcontrolslide, upwardly through the contr ol slide channel 115,forwardly through the pump casing channel .64,vand then around theupperportion of the rotor 71 and-is finally discharged from the pumpcasing channel .66 from which it passes rearwardly' to the control slidechannel 123 and upwardly through the control slide opening and thencethrough the upper compartment 89 of the control box to theupper flexibleconduit 43. Thus bearing lIlfIIllIld the previous description as to thepassage of fluid through the distributor box and the motor casings itwill be understood that the flow of fluid with the parts in the vlastmentioned position brings about counterclockwise movement of the motorrotors and thus rearward propulsion of the vehicle. It will also be seenthat as in the forward movement previously described, the power iscompounded by virtue of its passage success ively around the lower andupper sides of the pump rotor before discharge'rearwardly. I v

. With the parts in the forward speed position previously described, andby further rearward movement of the control lever 100, the control slide.91is shifted farther tothe right, looking rear'wardl until its channelsand 136, are move more or less into registry withvthe left hand pumpcasing channels 64 and 65 at the same time its channel 111 and centralchamber 108 come into registry with the right hand pump casing channels66 67; With'the parts I in this-position the, pump rotor. :71 takes:fluid simultaneously ,fromthe channels and 67 to which the fluid passesfrom :the: control .slide channel,- 135 ;and control {slide chamber 108,.the, latter .taking fluid-' simultaneously ;from the upper flexibleconduit 43 through -;,the. iupper.. control box icompartm'enti89 {andthrough; the control. slide'sopenings -:109;and r137 --.The .fluid thusI taken-tinto; the .rotor 'chamber is simultaneouslydischargednrearwardly; through, the .lowerileftz hand channel 65 and theupper. right hand: channel 66 into the control slide channels 136and111, from i tlietjformenzof which-the fluidpasses to the lower, control-:box {compartment 1 90 a and thence to the lowerflexibleconduit 44-andfrom the. latter of, ,which; 5 the zfluid {passes throii h; the rear,opening; 112-;of the: control l d s Te r gu 8) end=t s e ..-d w y -toughta wrficahc'h nnelaltl of thejr :p et efith zcon inlhosaszseentintFi ywhe's ,HPPQIT'BHQ. t niina e'sibe iv the. upper ie patment 9zend i hoseileweraendreommue ca e mit v(th lower comp rt ent; 0 st at;fl immdheoh melsllltthus flows :tQJt ei-lewerieompa tmeutn90=sand,from Lthence into the I lower; flexible conduit. 44:. 1 It i thus obr u'ithatinithe ila idescribed position of the parts compounding,- 10fpressure is dispensedywith fat-@the expense of increase, of. speeduup,tothe full, speed of rotation of the1crank shaft 38,11 audit. is ob--:vious that the;- function.of. the yielding pistons 87 intheirg.cylinders;83 serve in this position-simply to. supplement'theconstruction and action of the. pump and the motors in maintaining aconstant flow and constant ,pressure and a constant even'.torque.

I ln theinitial settin upi of, the device for operation, the fluidut1lized therein is:introduced through. either of the'cylinders 83, theair being allowed toeexhaust through an air relief cock 172 onthe'u'pper portion of the controlbox-as shown, and. fluid is supplied atvarioustimes as becomes necessary in the operationalthough theconstruction as shown; anddescribed has provento be particularlyproofagainst leakage and waste.

Itis obvious from the description that the transmission by impulses, socommonly a disadvantage and objection to apparatusof this nature is doneaway with in the present construction and arrangement andthe-construction has also been foundto be particularly effective in thatit avoids friction and undue heating of the transmission fluid, thesefacts combined .to --proinot e effective and efficient operationalongpractical lines and to complete a transmission which avoids thedisadavantages of gear transmission in cluding great loss ofpower-commonly incident to geartransmissions.

Iclaim:

1. A fluid transmission'comprising a forat each sidethereo'f',=a=singlepair of flexible "conduits betweenthe forwardand rear units, each in ipermanent "commumcationwith a Spair of said motor ports, and 'acont-rolling device between said pump unit and; the forward ends of saidconduits having means to place the intake poi-band outlet port-at oneside-of the pump unit 'separately in 9 communication with said conduitsand at" the same time 'place the intake and outlet ports at theopposite-sideof-the pumpunit-in intercommunicating relation and cut offthe same from the'conduitsq I 2: 'K-fluid transmission comprising a forward unit including amotor driven pump having a fluid intake port-and a'fluid=out'- let port at each sideth ereof,"'a reanmotor unithaving-pairsof intake and outlet ports including afluid'fintake" andafluid outlet at each -side-thereof, a single-pair of flexible*conduitsi between the forward and'rear-nnits :each in perinane'n'tcommunication with: a :pair of -'said" 1notor'p'ortsj'hnd"a'-'controlling device b etweensa'i'd pum unit andthe'forward ends o'f said conduits-havin means to placethefihtakeiportat-one si e in communication with a selected conduit and the'outletpor't {at the opposite side in communication witli; the otherconduit and also having means 'to --place'-'th e intake and: outletports at the opposite side" 'of' the nnit in inter-communicatingrelation and'cut efi the the'same' from the'conduits. I

3. A fluid transmission comprising 'a' forward unit including at-motordriven pump having a'fluidi'ntake port and a fluid 'outlet port ateachside thereofp'a rear m'otor unit-having pairs of intake and outlet portsincludinga fluid'intakeand a fiuid outlet at each side; thereof, asingle pair offiizible 1 conduits between the forward and rear units,

each in permanent communication with 'a pair of said motor ports,-and acontrolling device between said pump 'unitand the forward ends of saidconduits havingmeans to place the intake port and outlet port at oneside of the ump unit separately in communication with said conduits andat the same time place the intake and outlet ports at the" oppositesideof the pump unit in intercommunicating relation and cut 'oil' thesame from the conduits and also having means to place the intake portsatboth sides of the pum unit'in communication with one conduit anthe-outlet ports at both sides of the said unit in communication withthe otherconduitp 4. A fluid transmission comprising a' forward unitincluding a motor driven pump having fluid ports, a rear unit includinglaterally spaced shaft actuating motors and a fluid distributing devicebetween the motors fluid conduits extendingfrom'the forwar unit to thedistributing device'of the rear unit, and means to controlandcut offcommunication -'be tween the conduits and the ward circulatingpum'p'receiving' and discharging fluid at each side thereof; arear unitinclu'ding shaft 'actuating-lmotors; circulating conduits between'thepumpa'nd the motors, and -a' controlling device 'having means toestablish communication between each conduit and both sides of the'pumpjand also having means to limit'cornmunication of each conduittoone'side-'only of the pump 'and at the same time place op' oSite'Tsides of the pump in coinmunicziiting-relation.

' -6.A"fluid transmission'including a forwa'rdcirculating pum-"receiving. and discharging fluid at eachside; rearshaft'actuating 1motors," fluid circulating conduits' com municating at theirrear endswith the' 'mptors; and means -'controlling communication betweenthe-forward ends'of the'conduits and the pump, including 'amulti-channeled control member having channelsestablishing'communication between each of the conduit s and both sidesof the pump,land having other channels movable to place opposite sidesof the pump in communicating relationand at the same time limitcommunication of each conduit to one side only of the pump.

7. A fluid transmission including a for- Ward circulating pumpreoeiving'and discharging fluid at'each side, rear shaft actuatingmotors, fluid circulating conduits com-, municating at their r'earendswith the motors, and means controlling communication between the forwardends of the conduits and the pump, including a multi-channeled slidehaving channels establishing communication between each of the conduitsandoone and both sides of the pump, and having other chaflnels movableto place-one and opposite sides of the pump in'freely communieatingrelation and at the same timeout ofl communication atone and "both sideswith the conduits. v p

8. A fluid transmission comprising a rear motor unit including shaftactuating mo.- tors, and a fluid distributing device in com municationwith the motors, fluid conduits in communication at their rear ends withthe said distributing device, -a forward motor actuatedpuniphavingvertfically fs aced I which the forward end of the said'conduitsare connected, and a multich'anneled-'slide valve in the control boxhaving a'lengthwise series of channels, certain of which are di-' videdinto upper and lower compartments, movable to separatelyregister'between'the pump intake and outlet ports with the said conduitsfor the purpose of controllin the direction and speed of movement of'the.i J j 9. A'fluid transmission including a rear motor unit, a forwardpumping unit, con-' duits communicating between the units, said pumpingunit including a-f motor" drivenpump having means to take in and discharge fluid at both sides thereof,'a control device for establishingcommunication be-" tween each of said conduits and both sides of thepump and also having means to limit communication of 'the conduits toone side only of the pump and place opposite sides of the pump incommunication with one another, and yielding means in connection withopposite sides of the pump to permit of the compoundin of power asdescribed.

10. A flui transmission including a rear motor unit, a forward pumpingunit, conduits communicating between the units, said pumping unitincluding a motor driven pump having means to take in and dischargefluid at each side thereof, a control device for establishingcommunication between each of said conduits and both sides of the pumpand also having means to limit communication of the conduits to one sideonly of the pump and place the intake'and discharge means at theopposite side of the pump in co -munication with one another, pistoncylinders in communication with opposite sides of the pump, and yieldingpistons in the said cylinders for the purpose described.

11. A fluid transmission including a rear motor unit, a forwardcirculating pump having intake and discharge means at both sides,conduits between the pump and the motor unit, a circulation controldevice for controlling direction and extent of movement of the fluidfrom the pump, including a multi-channeled member adjustable toestablish control and cut off communication between both sides of thepump and each of the conduits, and a hand controlled lever operativelyconnected to said adjustable control member as described.

12. A fluid transmission including a rear unit having a pairof drivenshafts, motor casings through which the shafts are journaled', a motorfor each shaft within its respective casing, a shaft housing secured toand outstanding from the outer side of each motor casing, alongitudinally displaceable axle having a telescoping non-rotatableconnection with each shaft and having a bearino' intermediate its endsin the outer nortionof the respective housing, and a thrust memberaround each axle and in :cngagement with a poitionjof the respectiveshaft housing: inwardly beyond said bearing to normally p'revent'displacement of the axle.

13. A fluid transmission including. a rear mo't'orunit comprisingaxially alined driven sha'ftsffluifd motors moiintedseparately on saidshafts, and a stationary fluid distributor between the motors haifin'g acentral partition dividing. the same "into side chambers and having a'pair of fluid intake openings separately con'imunicating with said"chamhers and pairsoflaterally' extending upper and lowerfluiddistributing;passages, one of the passagesof eac'hpai'r being incom munication between one, of the ch ambers and opposite sides ofachofthe motors and the other passages being in communication between theother chamber and opposite sides of each of the motors.

14. A fluid transmission including a rear motor unit comprising axiallalined driven shafts, fluid motors mounte separately on said shafts, anda stationary fluid distributor between the motors having an internal webdividing the same into chambers and fluid intake openings separatelycommunicating with the chambers, and also having pairs of distributingpassages projecting laterally in opposite directions beyond the web,each pair communicating between one of the chambers and the same side ofboth of the motors as described.

15. A fluid transmission including a fluid circulating pump, fluidactuated motors, conduits between the pum and motors and a circulationcontrolling evice, the said pump having intake and outlet fluid passagesat opposite sides thereof and the said control device including amulti-channeled slide having certain channels arranged to separatelycommunicate between the conduits and the passages at opposite sides ofthe pump.

16. A fluid transmission including a fluid circulating pump, fluidactuated motors, conduits between the pum and motors and a circulationcontrolling evice, the said pump having intake and outlet fluid passagesat opposite sides thereof and the said control device includin amulti-channeled slide having certain c annels arranged to separatelycommunicate between the conduit and the passages at one side of the pumpand establish communication between the passages at the opposite side ofthe pump.

17. A fluid transmission including a fluid circulating pump, fluidactuated motors, conduits between the pump and motors and a circulationcontrolling device, the said pump having intake and outlet fluidpassages at opposite sides thereof and the said control device includinga multi-channeled slide having certain channels to separatelycommunicate bet n the conduits and the duitsl-betiveen the plifiip and'inctors 'anidljs heyiii g intzilte andcutletfluid passages at pppesitesides gtheicpf, and the said contr'ol device including mi ilti-jchanneled' slide .llav; ingjcertain chainnels to' sepsnzitelyccnmuni; cute "between .the conduits and v the. passages at each side ofthe um and having other chiinnels to vestablish communication betweenthe passages at euch 'sigle 9f the'pump,

19 ,A fluid t z nsmission including a fluid circulating pn npffluidactuated motors, con- (luits betweenthe nn and motors; and a circulationcontroll ng evice, the said pump having intake and outlet fluidpassagesat opposite sides thereof and the saidpqntrol device including amuIti-channeIed slide having certain channels to separately com municatebetween the conduits zind the passages at each side of the pump, othercha r- I nels to separately communicate between the I conduits T and thepassagesat one side of the pump and establish;,communicatiqn between thepassages at the other sidecf the p and haying still other channels tocdmmuni .cgitebetween the passages at -each side dfthe pump. i

f wfili imi EDWARDKAY,

